my hair is usually big and long and curly but for some reason this winter my hair isn't as big and it is thinning in some spots. I have no idea why. I do have this hard bump thing on my head but I have no idea what it is, I've looked at my scalp and the bump isnt visible but when I touch my scalp I can feel it..I doesnt hurt either... I can also see my scalp in some areas! I have been deeping conditioning every week... I've stopped using a comb and starting finger detangling and I use the LOC method for my wash and go. I don't understand why my hair is getting so thin i'm only 19! is it the weather or what?